Improper access control in Gitlab Community Edition and GitLab Enterprise Edition - CVE-2023-5226
Published: December 1, 2023
Vulnerability identifier: #VU83610
CSH Severity: Medium
CVSS v4: 5.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-5226
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions within the main branch of a repository with a specially designed name. A remote user can use a specially crafted branch name to bypass prohibited branch checks and manipulate repository content in the UI.
Affected software
Gitlab Community Edition
GitLab Enterprise Edition
GitLab Enterprise Edition
How to mitigate CVE-2023-5226
Install updates from vendor's website.
Gitlab Community Edition - addressed in versions 16.4.3, 16.5.3, 16.6.1
GitLab Enterprise Edition - addressed in versions 16.4.3, 16.5.3, 16.6.1
GitLab Enterprise Edition - addressed in versions 16.4.3, 16.5.3, 16.6.1